FLORENNES (BE)
Quarry blast19 May 2016
- Magnitude
- 1.5ML
- Depth
- –
- Belgian time
- 10:55:392016-05-19
- UTC
- 08:55:392016-05-19
Main parameters
| Date and time | 2016-05-19 08:55:39 UTC 2016-05-19 10:55:39 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.255° N, 4.633° E Uncertainty ± 2.9 km |
| Event ID | ROB 5502 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2016-05-19 11:14:27 Belgian time
Location map
- Epicentre
- Station that recorded the event
Arrival times at the stations
Each station first records the P wave, the fastest, then the S wave. The farther a station is from the epicentre, the later the waves reach it and the wider the gap between the two.
- Stations
- 9
- Epicentral distance
- 11.0 – 105.5km
- Mean velocity, P wave
- 5.7km/s
- Mean velocity, S wave
- 3.4km/s
- P wave
- S wave
- Curve fitted to the measurements
Notes and method
Curves: travel time of a direct wave in a homogeneous medium. The velocity of each wave and an origin-time shift, common to both, are fitted to the measurements by least squares. Depth not determined: hypocenter placed at the surface for the calculation. P wave: 8 measurements, root-mean-square deviation 0.41 s. S wave: 4 measurements, root-mean-square deviation 0.17 s.
Station measurements
P- and S-wave arrivals and ground displacement measured at each station. Click a column heading to change the order.
| km | ° | UTC | UTC | s | |
|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)9 stations | |||||
| MRDMaredsous | 11.0 | 61 | 08:55:40.74+1.46 s | 08:55:42.48+3.20 s | 1.74 |
| DOUDourbes | 18.0 | 189 | 08:55:41.79+2.51 s | 08:55:44.52+5.24 s | 2.73 |
| GESGesves | 35.4 | 66 | – | 08:55:49.25+9.97 s | – |
| RCHRochefort | 43.8 | 104 | 08:55:46.22+6.94 s | 08:55:51.95+12.67 s | 5.73 |
| RQRRonquières | 48.7 | 324 | 08:55:47.63+8.35 s | – | – |
| CLAClavier | 51.0 | 69 | 08:55:48.27+8.99 s | – | – |
| BOUBougnies | 51.2 | 287 | 08:55:48.85+9.57 s | – | – |
| SKQSteenkerque | 58.9 | 318 | 08:55:49.35+10.07 s | – | – |
| MEMHMembach | 105.5 | 68 | 08:55:57.23+17.95 s | – | – |